Parameter estimation of excitation systems from sampled data |
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Authors: | Liaw CM Liu TS Liu AH Chen YT Lin CJ |
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Affiliation: | Dept. of Electr. Eng., Nat. Tsing Hua Univ., Ksinchu; |
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Abstract: | The parameter estimation of excitation systems using a proposed indirect stochastic method is presented. In this method, the discrete-time ARMA model corresponding to each block of the excitation system is first identified from sampled input/output data. Then, the proper reduced order of the continuous-time model is determined using the concept of dominant energy modes. Finally, the parameters of the continuous-time model are found by matching its frequency response to that of the identified ARMA model. The proposed method is used to estimate the parameters of an excitation system in a pumped storage power plant. The results show that the estimated continuous-time models are rather close to those supplied by the vender |
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